Thrasymachus

Thrasymachus (459 BC-400 BC) was a Greek sophist and a contemporary of Socrates.

Biography
Thrasymachus was born in Chalcedon on the Bosphorus, and he became a sophist in Athens; he was known to gesticulate to increase emotions, and Herodotus comparred his motions to an ape. He played a major role in the development of rhetorical theory, and he was a successful rhetorician who was capable ot debating with Socrates. In 431 BC, he attended a symposium at Pericles' Residence, where he and Socrates debated over rulership, with Thrasymachus arguing that it was an art. Thrasymachus died in 400 BC.